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Callan Bentley's Snapshots

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  1. Old bridge pylon

    Snapshot Title: Old bridge pylon
    Taken by: Callan Bentley

    Image: Beartrap Canyon, Montana
    Image Owner: Callan Bentley



    Description:

    for a bridge that isn't there anymore.



  2. Granite dike

    Snapshot Title: Granite dike
    Taken by: Callan Bentley

    Image: Beartrap Canyon, Montana
    Image Owner: Callan Bentley



    Description:

    cutting foliated Archean basement



  3. Apparent offset

    Snapshot Title: Apparent offset
    Taken by: Callan Bentley

    Image: Deer Mountain Tephra Unconformity
    Image Owner: ahochstaedter



    Description:

    Is this a fault?



  4. Imbrication

    Snapshot Title: Imbrication
    Taken by: Callan Bentley

    Image: Carmel Valley River Depoits
    Image Owner: ahochstaedter



    Description:

    Pattern suggests that the current flow was from the right towards the left.



  5. Butte or mesa?

    Snapshot Title: Butte or mesa?
    Taken by: Callan Bentley

    Image: Boar's Tusk and Killpecker Dunes, Wyoming
    Image Owner: Callan Bentley



    Description:

    I'd say this one's on the borderline.



  6. Moo bear

    Snapshot Title: Moo bear
    Taken by: Callan Bentley

    Image: Boar's Tusk and Killpecker Dunes, Wyoming
    Image Owner: Callan Bentley



    Description:

    Common in these parts.



  7. Detritus

    Snapshot Title: Detritus
    Taken by: Callan Bentley

    Image: Boar's Tusk and Killpecker Dunes, Wyoming
    Image Owner: Callan Bentley



    Description:

    Shale, marlstone, limestone, and sandstone fragments weathered off of White Mountain, an escarpment of Eocene-aged Green River Formation to the west.



  8. Dune partially stabilized by vegetation

    Snapshot Title: Dune partially stabilized by vegetation
    Taken by: Callan Bentley

    Image: Boar's Tusk and Killpecker Dunes, Wyoming
    Image Owner: Callan Bentley



    Description:

    .



  9. The Killpecker Dunes

    Snapshot Title: The Killpecker Dunes
    Taken by: Callan Bentley

    Image: Boar's Tusk and Killpecker Dunes, Wyoming
    Image Owner: Callan Bentley



    Description:

    so named because of their insalubrious effects on the bodily functions of the U.S. Cavalry.



  10. The Boar's Tusk

    Snapshot Title: The Boar's Tusk
    Taken by: Callan Bentley

    Image: Boar's Tusk and Killpecker Dunes, Wyoming
    Image Owner: Callan Bentley



    Description:

    A volcanic neck of "Wyomingite" from a Pleistocene-aged volcanic complex called the Leucite Hills.



  11. Round thing =

    Snapshot Title: Round thing =
    Taken by: Callan Bentley

    Image: Castle Gardens, Wyoming
    Image Owner: Callan Bentley



    Description:

    Indian shield motif petroglyph



  12. Checking out the Indian petroglyphs

    Snapshot Title: Checking out the Indian petroglyphs
    Taken by: Callan Bentley

    Image: Castle Gardens, Wyoming
    Image Owner: Callan Bentley



    Description:

    Sheild motifs galore.



  13. Jim the bus driver

    Snapshot Title: Jim the bus driver
    Taken by: Callan Bentley

    Image: Castle Gardens, Wyoming
    Image Owner: Callan Bentley



    Description:

    walking back down



  14. Slickensided fracture surface.

    Snapshot Title: Slickensided fracture surface.
    Taken by: Callan Bentley

    Image: The French Thrust, Sun River Canyon Montana
    Image Owner: Callan Bentley



    Description:

    .



  15. Slickensides

    Snapshot Title: Slickensides
    Taken by: Callan Bentley

    Image: The French Thrust, Sun River Canyon Montana
    Image Owner: Callan Bentley



    Description:

    .



  16. Pencil for scale

    Snapshot Title: Pencil for scale
    Taken by: Callan Bentley

    Image: The French Thrust, Sun River Canyon Montana
    Image Owner: Callan Bentley



    Description:

    demarcated in cm units for your scaling pleasure



  17. Random Halloween eraser

    Snapshot Title: Random Halloween eraser
    Taken by: Callan Bentley

    Image: The French Thrust, Sun River Canyon Montana
    Image Owner: Callan Bentley



    Description:

    makes an appearance.



  18. A second appearance

    Snapshot Title: A second appearance
    Taken by: Callan Bentley

    Image: The French Thrust, Sun River Canyon Montana
    Image Owner: Callan Bentley



    Description:

    by everyone's favorite gut microbe!



  19. Mississippian carbonate

    Snapshot Title: Mississippian carbonate
    Taken by: Callan Bentley

    Image: The French Thrust, Sun River Canyon Montana
    Image Owner: Callan Bentley



    Description:

    folded into a syncline



  20. Colluvium on slope

    Snapshot Title: Colluvium on slope
    Taken by: Callan Bentley

    Image: The French Thrust, Sun River Canyon Montana
    Image Owner: Callan Bentley



    Description:

    .



  21. Pleistocene glacial till

    Snapshot Title: Pleistocene glacial till
    Taken by: Callan Bentley

    Image: The French Thrust, Sun River Canyon Montana
    Image Owner: Callan Bentley



    Description:

    Deposited by glaciers.



  22. Cretaceous shale

    Snapshot Title: Cretaceous shale
    Taken by: Callan Bentley

    Image: The French Thrust, Sun River Canyon Montana
    Image Owner: Callan Bentley



    Description:

    .



  23. Mr. E. coli

    Snapshot Title: Mr. E. coli
    Taken by: Callan Bentley

    Image: The French Thrust, Sun River Canyon Montana
    Image Owner: Callan Bentley



    Description:

    finds a home in the Pleistocene glacial till



  24. Strandlines from higher water levels

    Snapshot Title: Strandlines from higher water levels
    Taken by: Callan Bentley

    Image: Swift Dam anticline, looking west
    Image Owner: Callan Bentley



    Description:

    .



  25. Spillway

    Snapshot Title: Spillway
    Taken by: Callan Bentley

    Image: Swift Dam anticline, looking west
    Image Owner: Callan Bentley



    Description:

    from the Swift Reservoir



  26. Fossil coral heads

    Snapshot Title: Fossil coral heads
    Taken by: Callan Bentley

    Image: Swift Dam anticline, looking west
    Image Owner: Callan Bentley



    Description:

    Lots of bumps - positively weathering.



  27. Fossil coral head

    Snapshot Title: Fossil coral head
    Taken by: Callan Bentley

    Image: Swift Dam anticline, looking west
    Image Owner: Callan Bentley



    Description:

    Very common here.



  28. Post-faulting deposition

    Snapshot Title: Post-faulting deposition
    Taken by: Callan Bentley

    Image: Swift Dam anticline, looking west
    Image Owner: Callan Bentley



    Description:

    of sediments - an erosional remnant showing old soil profiles and cobble layers.



  29. Cretaceous strata

    Snapshot Title: Cretaceous strata
    Taken by: Callan Bentley

    Image: Swift Dam anticline, looking west
    Image Owner: Callan Bentley



    Description:

    Younger than the overriding carbonate, and more deformed.



  30. Extensional fractures

    Snapshot Title: Extensional fractures
    Taken by: Callan Bentley

    Image: Swift Dam anticline, looking west
    Image Owner: Callan Bentley



    Description:

    forming on the outside of the carbonate fold



  31. "Frost pocket" cave

    Snapshot Title: "Frost pocket" cave
    Taken by: Callan Bentley

    Image: Devil Canyon Overlook, Bighorn Canyon National Recreation Area, Wyoming
    Image Owner: Callan Bentley



    Description:

    common in these limestones of the Rockies



  32. A lovely fold

    Snapshot Title: A lovely fold
    Taken by: Callan Bentley

    Image: Seacliff exposures of turbidites of the Ross Sandstone, Ireland
    Image Owner: Zoltan Sylvester



    Description:

    Nice straight limbs



  33. Antiform!

    Snapshot Title: Antiform!
    Taken by: Callan Bentley

    Image: Seacliff exposures of turbidites of the Ross Sandstone, Ireland
    Image Owner: Zoltan Sylvester



    Description:

    Nice fold



  34. A label

    Snapshot Title: A label
    Taken by: Callan Bentley

    Image: Fold in the Amsden Formation on the eastern side of the Bighorn Mountains, Wyoming
    Image Owner: Callan Bentley



    Description:

    Just in case you don't believe me, there's a sign to prove it!



  35. Eastward dipping strata of the Amsden Formation

    Snapshot Title: Eastward dipping strata of the Amsden Formation
    Taken by: Callan Bentley

    Image: Fold in the Amsden Formation on the eastern side of the Bighorn Mountains, Wyoming
    Image Owner: Callan Bentley



    Description:

    Mississippian-to-Pennsylvanian in age, warped during Laramide mountain building (late Cretaceous to early Paleogene).



  36. Magic half car

    Snapshot Title: Magic half car
    Taken by: Callan Bentley

    Image: Fold in the Amsden Formation on the eastern side of the Bighorn Mountains, Wyoming
    Image Owner: Callan Bentley



    Description:

    Very popular in northern Wyoming.



  37. Bighorn National Forest sign

    Snapshot Title: Bighorn National Forest sign
    Taken by: Callan Bentley

    Image: Fold in the Amsden Formation on the eastern side of the Bighorn Mountains, Wyoming
    Image Owner: Callan Bentley



    Description:

    "Land of many uses..." including geology!



  38. Fold - and a fault?

    Snapshot Title: Fold - and a fault?
    Taken by: Callan Bentley

    Image: Fold in the Amsden Formation on the eastern side of the Bighorn Mountains, Wyoming
    Image Owner: Callan Bentley



    Description:

    The bright red-orange vertical unit of rock may be fault breccia.



  39. North Peak

    Snapshot Title: North Peak
    Taken by: Callan Bentley

    Image: Frank Slide, Alberta
    Image Owner: Callan Bentley



    Description:

    of Turtle Mountain



  40. South Peak

    Snapshot Title: South Peak
    Taken by: Callan Bentley

    Image: Frank Slide, Alberta
    Image Owner: Callan Bentley



    Description:

    of Turtle Mountain



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